نتایج جستجو برای: zebra fish
تعداد نتایج: 107506 فیلتر نتایج به سال:
the zebra cichlid cichlasoma nigrofasciatum is a species famous for its behaviors of biparental care. this study was conducted to examine the effect of parental care and their size on the reproductive success of this fish. hatching rate (hrs) has significant difference (p
The aim of the present study was to evaluate the effects of different levels of prebiotic on growth performance and non-specific immune parameters of zebra fish. Four hundred and twenty fish (mean weight 45 ± 0.1 mg) were supplied, randomly stocked in aquaria assigned to four treatments repeated in triplicates and fed with experimental diets contain 0, 0.5, 1 and 2% prebiotic for 8 weeks. At th...
The present study was carried out to assess the effects of different levels of Pediococcus acidilactici including 0, 1 × 106, 2 × 106, 4 × 106 and 8 × 106 colony forming unit per g of the diet (cfug-1), in a completely randomized design for 60 days, on growth, intestine flora and skin mucus bactericidal response of zebra fish. The best growth indices including weight, length and specific growth...
Pathogen density and genetic diversity fluctuate in the outside-host environment during and between epidemics, affecting disease emergence and the severity and probability of infections. Although the importance of these factors for pathogen virulence and infection probability has been acknowledged, their interactive effects are not well understood. We studied how an infective dose in an environ...
Mannose receptor (MR) is a member of pattern-recognition receptors (PRRs), which plays a significant role in immunity responses. Much work on MR has been done in mammals and birds while little in fish. In this report, a MR gene (designated as zfMR) was cloned from zebra fish (Danio rerio), which is an attractive model for the studies of animal diseases. The full-length cDNA of zfMR contains 624...
Background: The presence of pesticide due to the huge demand for agricultural purposes is very prevalent in surface waters of Iran. These pesticides could finally accumulate in aquatic ecosystems and have been proved to have toxic effects on aquatic animals. The aim of this study was to assess the acute toxicity of Diazinon, Deltamethrin, Butachlor and Pretilachlor on Zebra Cichlid (Cryptoheros...
The purpose of this study was to investigate the effect of Tribulus terrestris extract on the expression of lysozyme gene, IL1 and TNF in Zebra fish. For this purpose, fish were fed in four treatment group’s including; T0 (control (0)), T1 (50), T2 (100) and T3 (200 mg of extract per kg of food) for 60 days. In order to measurement of the gene expression, sampling was performed at the end of th...
A. 1981. Attraction of zebrafish, Brachydanio rerio to isolated and partially purified chromatographic fractions. Enivron. Baier, H. 2000. Zebrafish on the move: towards a behavior-genetic analysis of vertebrate vision. behavioral screening method for detecting auditory response defects in zebrafish. An increase in habitat complexity reduces aggression and monopolization of food by zebra fish (...
The potential entry of nanomaterials into the water ecosystems increased following their increasing use. In addition to the direct effects of nanomaterials on aquatic organisms, they also affect the toxicity of other pollutants on aquatic organisms. This study assessed the presence of titanium dioxide nanoparticles (nTiO2) in water on acute toxicity of silver nanoparticles (AgNPs) on zebra fish...
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